science & tech MCQ section 3 MCQ Questions & Answers Detailed Explanation
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The following question based on science & tech topic of general awareness mcq
(a) Train
(b) Submarine
(c) Ship
(d) Plane
The correct answers to the above question in:
Answer: (c)
The waterline is the line where the hull of a ship meets the surface of the water, in concept or reality.
Specifically, it is also the name of a special marking, also known as the national Load Line or Plimsoll Line (positioned amidships), that indicates the draft of the ship and the legal limit to which a ship may be loaded for specific water types and temperatures in order to safely maintain buoyancy, particularly with regard to the hazard of waves that may arise.
The purpose of a load line is to ensure that a ship has sufficient freeboard (the height from the water line to the main deck) and thus sufficient reserve buoyancy (e.g., the enclosed volume created by the area between the waterline and the main deck).
The freeboard of commercial vessels is measured between the lowest point of the uppermost continuous deck at the side and the waterline and this must not be less than the freeboard marked on the Load Line Certificate issued to that ship.
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Read more science and tech Based General Awareness Questions and Answers
Question : 1
An astronaut in outer space will observe sky as
a) black
b) red
c) blue
d) white
Answer »Answer: (a)
Space is black because there are no substances or objects to reflect back any colour (or all colours, which would make it white). That is also why the astronauts see the earth as we see it in photos, but the space around it is black.
The light from the sun is reflected back as the blues and greens and browns that we see, but the space around the earth is just that - empty space and therefore does not reflect back any colours, so it is black.
Question : 2
Consider the following statements:
- Polar Remotely Operated Vehicle (PROVe) was successfully operationalised for research in North Antarctica by National Institute of Ocean Technology (NIOT).
- It is India’s second Polar Remotely Operated Vehicle (PROVe) in North Antarctica.
- It will help researchers to study and find out details about dissolved oxygen in sea bottom, salinity and the quantity of sunlight hitting the bottom of the sea.
a) 1 and 3 only
b) 2 and 3 only
c) 1 and 2 only
d) All of the above
Answer »Answer: (a)
It is India’s first Polar Remotely Operated Vehicle (PROVe) in North Antarctica.
Question : 3
World’sfirst gunmade from3Dprintertechnology test-fired successfully in
a) China
b) Japan
c) UK
d) USA
Answer »Answer: (d)
The first gun of the world made out of 3D printer technology was fired successfully in US. It is available at 8000 US Dollars.
Question : 4
Consider the following statements.
- India and Pakistan exchanged the list of their nuclear installations under a bilateral agreement that bars them from attacking each other’s atomic facilities.
- This is the 25th consecutive exchange of such list between the two countries.
- The agreement, which was signed on 1st January, 1988 and entered into force on January 27th, 1991.
a) 1 and 3
b) 2 and 3
c) 1 and 2
d) None of them
Answer »Answer: (c)
The agreement, which was signed on December 31st, 1988 and entered into force on January 27th, 1991.
Question : 5
In the case of the nuclear disaster which of the following options for cooling the nuclear reactors may be adopted?
- Pumping of water to the reactors.
- Use of boric acid.
- Taking out the fuel rods and keeping them in a cooling pond.
a) 1, 2 and 3
b) 2 and 3
c) 1 and 2
d) 3 only
Answer »Answer: (c)
In a nuclear disaster, the main focus is to cool the nuclear reactor. Pumping of water to the reactors and use of boric acid are some of the options.
Question : 6
Consider the following statements.
- Russia’s Rostech State Corporation has signed 3 billion US dollar deal with Hindustan Aeronautics Limited (HAL) to manufacture 200 Kamov 226T light helicopters.
- These helicopters will be manufactured under Make in India initiative and will replace the ageing fleet of Cheetah and Chetak helicopters.
- Kamov 226T light helicopters will be mainly used to move troops and equipment to high-altitude locations like Siachen.
a) 1 and 3
b) 2 and 3
c) 1 and 2
d) All of these
Answer »Answer: (b)
Russia’s Rostech State Corporation has signed 1 billion US dollar deal with Hindustan Aeronautics Limited (HAL) to manufacture 200 Kamov 226T light helicopters.
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